1-[(R)-2-((9S,12S)-9-Carbamoylmethyl-7,10-dioxo-2-oxa-8,11-diaza-bicyclo[12.2.2]octadeca-1(17),14(18),15-trien-12-yl)-2-hydroxy-ethyl]-piperidine-2-carboxylic acid tert-butylamide AIDS-050789 AIDS050789 Val-Phe-Pip Macrocylic deriv.